I used to be friends with this girl called X but then we kind of drifted apart but now it seems like every race she has to beat me at, and every guy I like she has to flirt with and make them like her.

Everyone I used to be close with she's besties with and they no longer talk to me because she knows stuff about me from when we were friends and tells them.

The worst part is I know I am insanely jealous but I don't know how to deal with it, I just want her to leave my life alone, any help?

Well firstly if they were your real friends,they wouldn't believe everything this 'x' said blindly instead confront you and ask if it were true..

If your friends easily gave up on you and went with her,then u can calculate how long they would take to drift from her and go to someone else..

I think your better off without such people you don't need negative energy.why don't you join clubs,groups in your school and find people with similar interests and may be make new friends..

If you really want to talk this through with your friends,then tell them what they r doing really hurts you and you expected them to talk to you rather than just ignore you..if they care they will make an effort..